Typewriting machine



Filed Aug. 11 1919 s Sheets-Sheet 1 INVENTOR 5% BY ATTORNEY Get; 16,1923. mmsz G. G. some TYPEWRITING" MACHINE Filed Au 11 1919 aSheets-Sheet 2 INVENTOR ATTORNEY 0m. 16, 1923. HAJ'MSZ G. G. GOINGTYPEWRITING MACHINE Filed Aug. 11 1919 3 Sheets-Sheet 3 INVENTOR ATORNEY enonen G. GOING, OF MIDDLE'IYOWN, CONNECTICUT, ASSIGNORHBY MEsNEASSIGN- TYPEWRITER COMPANY, me, A CORPORATION OF MENTS, TO THE NOISELESSDELAWARE.

'ITENVT :QFFICE, f

TYPEWRITING MACHINE.

Application filed August 11, 1919. Serial NO. 316,609.

A To all whom it may concern:

Be it known that I, GEORGE GOULD GOING, .a citizen of the United States,residingat Middletown, in the county of Middlesex and I '5 State ofConnecticut, have invented certain new and useful Improvements in Typewritin Machines, of which the following is a fufi, clear, and exactdescription, such as will enable others skilled in the art to which '10it appertains to make-and use the same.

This invention relates to typewriting machines, and is particularlyproved type action capable of mechanically and functionally perfectedembodiment in a .relatively-small size and light weight writing machine.i

It is an object of the invention to provide a simplified and improvedtype action in .cluding a key lever and type bar and a train of actionstherebetween, operable to effect printing without the objectionablerecurrent noises of. staccato impact b the type bars against the backedpaper.

It is a further object to provide a mecha- 125 nism of the charactermentioned which is capable of embodiment to occupy arelatively smallspace, and retain the characteristic advantages of each touch and rapidoperation, combined with the advantage of sub- 'stantially noiselessprinting.

.Another object is to provide a typewriting machine having a typeactionof the character indicated which is structurally superior andfunctionally advantageous.

Rim Other objects and'advanta'ges of the invention will be irr'partnoted hereinafter in connection with the following description of theaccompanying drawing which illustrates a typical, but'preferred,embodiment of the invention and in whichj i Fig. 1 isoa side view takenthrough the machine representing the structure and association ofoperating parts including a key lever and type bar and the improvedtrain of connections therebetween, and r i Fig. 2 is a fragmentary topview of the machine including the type action shown in Fig 1, and Fig. 3is a diagrammatic representation of the major parts tion in differentpositions, certain of t e numerals of identification having a prime forintermediate position and a second for final position. v The supportingstructure of the typewriter includesa directed to an imof the ty e ac--base 1 and arear plate Adjacent to the latter there is provided a platen3 mounted to rotate on and travel longitudinally with a carriage 4. Theletter space movement of the carriage may be gov: erned by an"escapement mechanism 5 in a well known'manner.

The type action includes a key lever 6 pivoted at its rear end at 7 andhaving a depressible. finger k y 8 at its fore end and a type bar 9pivoted at its lower end on a fulcrum 10 and having type characters 11at its free end.

The keylever and type bar are connected by an angular 'U-shaped link 12pivoted to rotate at 13 and having an offset on its lower fore end 14positioned below for actuation by the lever 61 Link 12 is furtherconnected at 15 with a horizontally disposed link 16, the latter in turnconnected at itsrear end by a pivot 17 to the type bar at the end of thelatter below the fulcrum 10. As thus far described, it will be apparentthat the depression of the key lever 6 rocks link 12 about its axis ofmotion 13 and thereby pulls forward the link 16 to swing type bar 9toward platen 3. The-limits of travel of the key lever 6 are set by twocushion stops 18 and 19; stop 18 arresting the elevating of the leverand stop19 arresting its depression. Furthermore, stop 19 is so locatedas to engage and arrest the key leverat a'time when the attendantmovement of. the link 16 has been insufiicientto swing' the type bartinued movement of the type bar is permitted on account of the lostmotion action between the offset 14 of link 12 and its correspondingpart of the lever 6. Restoration of the parts to the position .shown inFig. 1 may be accomplished by' a spring 20 acting below the rear end oflever 6' and by a coll spring 21 connecting link 12 with a verticaloflset arm 22 on or integral with link 16. It will be apparent thatspring 21 tends to'draw to-' through its, full, stroke to print, andcon-- of the pivoted to the free end of type bar 9, preferably in therear of the type head 11, and a link 24 is pivotally connected to arigid element 25 which may constitute a part of the type segment frame.Links 23 and 24 are also pivotally connected to each other adjacenttheir ends 26 and are of a length to constitute an extended toggle whenthe type bar is moved to print. There is also. provided a lever 27pivotally connected at 28 to the type bar and having at its fore end anintegral or added weight 29 constituting a momentum accumulator, whichacts to store energy during the initial depression of the key lever andexpend such energy incontinuing the stroke of the type bar against theplaten to efi'ectthe printing. In order both to render the movement ofthe mo-' mentum accumulator 29 such that the initial storage of energytherein will be without disadvantageous effect upon the touch of the keylever and to effect the dissipation of the stored energy through apower-increasing leverage for transmitting pressure behind the free endof the type bar, lever 27 is pivotally connected at 30 with a link 31,and the upper end of the latter is in turn pivotally connected at 32 toa slightly ofi'set \branch 33 of the link 24.

In operation, the depression of the lever 6 effects a direct swingingmovement of the type bar at accelerated speed and particularly onaccount of the relative proximity of the pivot point 17 and the fulcrum10, it will be apparent that the touch at the key is rendered light. Theswinging movement of the upper part of the type bar will also entail anextension of the toggle links 23 and 24 and consequently a bodilyelevation of the link 31 which will thereby effect the rotation of themomentum accumulator 29 about its axis 28 at the same time that themomentum accumulator and its lever 27 are bodily moved on account of itsattachment to the type bar. In the embodiment shown in the drawing, theparts are designed so that the free end, that is the type end of the bar9, is moved at high speed during the period of force transmissionthereto'from the key lever, and this connection is maintained to thetype bar for the major part of its travel toward the platen. Thearresting engagement of the key lever-by stop 19 then immediatelytransfers the actuating force for the type bar from the key lever to themomentum accumulator 29. The latter thereafter moves at a constant ordecelcrating speed and therefore during the perlod of energy expenditureby the Weight 29 the speed of the free end of the type bar is rapidlybut smoothly decreased while the effectiveness of force transmission, onaccount of the approach of the links 23 and 24 to form an extendedtoggle, rapidly but smoothly increases toward infinity.

Practically considered, this operation results in a quick positioning ofthe type bar closely adjacent the platen at an accelerated speed and animmediate, but nevertheless not abrupt, diminution and deceleration ofthe speed of the type bar and its final approach to and movement againstthe platen 3 slowly but powerfully. Moreover, the movement of the typebar toward the platen on its printing stroke may be substantiallylimited by the extension of the toggle links 23 and 24, and the latteris preferably connected with the element 25 in turn mounted for relativeadjustment through screws 34. The type bar,is thus quickly broughtrearward but is moved into contact with the ribbon against the paper ata relatively slow speed and therefore without substantial noise ofimpact, and the actual printing movement is accomplished underrelatively heavy pressure by the continued utilization of energy storedin the weight 29.

The escapement for the mechanism of the carriage 4 may be adjusted foractuation by the type bar 9 during the period of travel of the latterunder the force of the weight 29; In the particular embodiment of theinvention illustrated the escapement mecha nism may include a lever 35having its fore end located near and engaged by a shoulder 36 of thetype bar. The printing and the escapement actuation may thus both beeffected by the supplemental energy stored in the weight 29 anddissipated through the train of connections 31, 24 and 23.

In order, further, to prevent overthrow of the toggle and to arrestsilently the final swinging movement of the weight 29, the link 31 has aresilient arm 37 with a stud on its extremity in a position to besilently engaged by the cam edge 38 of the lever 27. By thisconstruction the edge 38 is brought silently into engagement with thestud on cushion arm 37 just prior to the consummation of the printing.Consequently, weight 29 is positively but resiliently arrested and itsreturn movement aided by the rebound of the arm 37.

To arrest the free end of the type bar on its return stroke there isprovided a cushion stop 39 held in a suitable part of the type barsegment. The cushion 39 may also if desired be arranged to limit thereturn movement of an extension 40 of the link 24.

Fig. 2 shows the relative arrangement of the type bar segment to theribbon spools, to the platen and to the escapement mechanism. Asrepresented, the type segment is arranged in an arc in front of theplaten and in substantially the horizontal plane of the latter and thetype bars are arranged radially from the printing point and a e mounted1 being associated with said type bar to exin a bottom comb guide v 'Ihetype segment may be mounted for raising and lowering to difi'erentcasepositions on uprights 42. The ,finger keys 8 may be arranged in theconventional manner at the keyboard.

Having described my invention, what I Patent is; k

1. In a typewriting machine, in combination, aplaten, a key lever, aswinging type bar, operating connecting means between claim as'new anddesire to secure by'Letters said key lever and type 'bar whereby theformcr actiiates the latter, anda motion governing means kinematicallylinked to the type bar independently of said connecting means, includingan independent energy storing member, and arranged to control the entireswing of the type bar toward the platen, storing energy during theinitial movement and expending the same during the completion of theprinting stroke.

2. In a typewriting machine, in combination, a platen to back'thepaper,a de

. pressible key lever, a type bar, operative con-- necting means betweensaid key lever and L saidtype bar to start the latter toward the platenon the depression of the former, a

' stop to arrest depression of said key lever prior to the finalmovement of said type bar, said connecting means including a lost motiondevice to permit continued 'movement of said type bar after arrest ofsaid key lever, and means independent of said connecting means to storeenergy durlng the 1nterval of movement of said type bar by said keylever, said last mentioned means being associated with said type bar toexpend its stored energy in eiiectinv the final printing movement ofsaid type ar.

3. In a typewriting machine, in combination, a platen to backthe paper,a depressible key lever, a type bar, operative con'- necting meansbetween said; key lever and (iii said type bar to start the lattertoward the platen on the depression of the former, a stop to arrestdepression of said key lever prior to the final movement of said typebar, said connecting means including a lost motion device to permitcontinued movement of said type bar after arrest of said key lever, andmeans independent of said connecting means to'store energy during theinterval of movement of said-type bar by said key lever, said lastmentioned means pend its stored energy in effecting the final printingmovement of said type bar through a speed reducing and power increasingconnection. 1

4. In a typewriting machine, in combination, a platen, a pivoted typebar, a key lever, a direct connection between said key lever and saidtype bar to start movement of the latter upon depression of the former,

means to store energy during the movement of said'type bar, bysaid keylever and expend energy thereafter to complete the printing stroke ofsaid type bar, and means to limit the printing stroke of said type barsubstantially independently of Said platen, said energy storing meansbeing associated with said type bar limiting means to expend its energytherethr'ough during I the final travel of said type bar.

5. In a' typewriting machine, in combination, a platen, a pivoted typebar having its free end normally spaced from the platen and capable ofmovement through an arc toward the same, a key lever, connecting meansbetween said key lever and said type bar to start the latter on itstravel toward the platen upon depression of the former and permitcontinued travel of said type bar.

store energy during the earlier movement.

of said type bar and to expend such energy to effect the latter movementof said type bar. 7

6. In a typewriting machine, in combina tion, a platen, adepressible keylever, a pivoted type bar, operative connections between said key leverand said type bar to effect initial movement of the latter upondepression of the former and to permit continued movement of said typebar independently of said key lever, energy storing means connected tosaid type bar to gradually and increasingly store energy during movementof said type bar by said key lever, and also connected with said typebar to expend such stored energy to effect 'continuedand final movementof said type bar for printing independently of said key lever.

In a typewriting machine, in combination, a pivoted type bar, a keylever and connections therebetween including an element pivotallyconnected to said type bar adjacent the axis of the latter, a weightpivotally connected to said type bar adjacent the axis of the latter buton the opposite side from the connection of suit element, and connectingmeans between Sdlltl weight and said type bar adjacent its free end.

8. In a typewriting machine, in combination, a pivoted type bar, a keylever, operative connecting means therebetween to start movement of thelatter upon depression of said key lever and to permit continuedmovement of said type bar independently of said key lever, a toggle tosilently arrest movement of said type bar onits printing stroke, andmeans connected with said type bar independently of said connectingmeans between the latter and said key lever to store energv during movement of said type bar by said key lever, and

I said type bar and said key lever to start .movement of the former upondepression of the latter and to permit continued movement of said typebar independently of said key ,lever, and means independent o'f saidconnecting means to effect said continued movement of said type barrelatively slowly.

7 and relatively forcefully to effect printing by pressure and withoutnoisy impact.

10. In a typewriting machine, in combination, a pivoted type bar, aweighted lever carried thereby to store energy during initial movementof said type bar and to expend such energy to effect final printingmovement of said type bar, and means to silently cushion the finalmovement of said weighted lever.

11. In a typewriting machine, in combination, a platen, a key lever, aswinging type bar, operative connecting means between said key lever andtype bar, a weighted lever having mechanical connections with said typebar independent of said connecting means, said weighted lever beingarranged to be actuated by the swing of the type bar, and resilientmeanson said mechanical connection arranged to be moved into engagementwhen-the type bar is in printing position whereby the energy in excessof that required to effect printing is silently expended.

.12. In a typewriting machine, in combination, a pivoted type bar, a keylever, and

operative connecting means therebetween including a substantiallyU-shaped member pivoted at one end and connected for actuation at itsother end by said key lever, a link pivotally connecting said member andsaid type bar, said link having an offset extremity and a return springconnected between the ofiset end of said link and the medial portion ofsaid member.

13. In a typewriting machine, in combination, a pivoted type bar, a keylever, operative connecting means therebetween to effect acceleratedmovement of said type bar upon depression of said key lever and topermit continued movement of said type bar independently of said keylever, and means independent of said connecting means to effectcontinued decelerated print-.

mg movement of said type bar.

14. In a typewriting machine, in combination, a pivoted type bar, a keylever, operative connecting means therebetween to effect acceleratedmovement of said type bar upon depression of said key lever and topermit continued movement of said type bar bar independently ofsaidoperating connections, including an energy storing member and arrangedto control individually the entire swing of its type bar as itapproaches the platen; said operating connec tions each including partsnormally engaged but separable to allow the continued motion of the typebar under the control of said motion governing means after the actuatingkey lever-has come to rest.

16. In a typewriting machine, in combination, a platen, a type barpivotally mounted adjacent one end and having type characters at itsopposite end, a key lever, operative connections between said lever andsaid one end of said bar to effect movement of the latter towards saidplaten, and motion governing means including a toggle connected to saidopposite end of said bar to limit the movement thereof toward saidplaten.

17. In a typewriting machine, in combina tion, a platen, a type barpivoted adjacent one end. and having type characters at its oppositeend, a key lever, operative connections between said lever and said oneend of said bar to effect movement of the latter toward 18. In atypewriting machine, in sub-combination, a type bar having a pivotalaxis adjacent one end and having type character at its opposite end, anelement pivoted to said bar between the axis and type end of the latterand having a substantially Weighted free end, and link connectionsbetween the type d f aid bar and said lement to effect acceleratedmovement of the weighted end of said element about the point ofconnection of the latter to said bar during bodily movement of saidelement about the axis of said bar when the latter is actuated.

19. In a typewriting machine, in sub-combination, a type bar having apivotal axis adjacent one end and having type characters at its oppositeend, an element pivoted to narrate tion, a platen, a type bar having apivotal axis adjacent one end and having a type character at itsopposite free end, a key lever, operative connections between said leverand said bar. to effect relatively rapid movement of the free end of thelatter toward the platen upon depression of the former, an elementhaving a substantially weighted portion constituting means to store andexpend energy, and operative connectidns between said bar and saidelement to efiect initially slow but gradually accelerated movement ofthe weighted portion of the latter for storing energy during movement ofsaid bar by said lever and to effect continued but subtantiallydecelerated movement of said bar with augmented pressure by the weightedportion of said element in expending energy.

21. In a typewriting machine, in sub-combination, a type bar, a keylever, an operative connection therebetween to transmit initialaccelerated movement to the former from the latter and to permitcontinued final movement of the former independently of .the latter, andmeans associated with said bar independently of said'connection toreceive and store energy during said initial movement of said bar and toexpend such energy in efi'ecting said final movement of said bar atsubstantially reduced speed.

22. In a typewriting machine, in combines tion, a platen, a mediallypivoted type bar, a key lever, operative connections between said leverand one end of Said bar to effect initial movement of the latter towardsaid platen, and motion governing meansinclud-- ing a toggle connectedto the opposite end of said bar to limit movement thereof toward saidplaten.

23. In a typewriting machine, in combination, a platen, a mediallypivoted type bar,

a key lever, operative connections between said lever and one end ofsaid bar to effect initial movement of the latter toward said platen,and means connected to the opposite end of said barv toefiect final andsubstantially slowed movement thereof toward said platen.

24. In a typewriting machine, in combination, a platen, a mediallypivoted type bar,

a key lever, operative connections between said lever and one end ofsaid bar to effect initial movement of the latter toward said platen,and means connected to the opposite end of said bar. to efi'ect finaland substantially slowed movement thereof toward said platen and tolimit said movement substantially independently of said platen.

In testimony whereof I affix my signature, in thepresence of twowitnesses.

GEORGE G. GOING.

. Witnesses:

J. W. ANDERSON,

-FERDINAND Worm.

